cairo_surface_t *
_cairo_boilerplate_xcb_create_surface (const char *name,
cairo_content_t content,
int width,
int height,
int max_width,
int max_height,
cairo_boilerplate_mode_t mode,
int id,
void **closure)
{
xcb_screen_t *root;
xcb_target_closure_t *xtc;
xcb_connection_t *c;
xcb_render_pictforminfo_t *render_format;
xcb_pict_standard_t format;
*closure = xtc = xmalloc (sizeof (xcb_target_closure_t));
if (width == 0)
width = 1;
if (height == 0)
height = 1;
xtc->c = c = xcb_connect(NULL,NULL);
if (xcb_connection_has_error(c)) {
fprintf (stderr, "Failed to connect to X server through XCB\n");
return NULL;
}
root = xcb_setup_roots_iterator(xcb_get_setup(c)).data;
xtc->pixmap = xcb_generate_id (c);
xcb_create_pixmap (c, 32, xtc->pixmap, root->root,
width, height);
switch (content) {
case CAIRO_CONTENT_COLOR:
format = XCB_PICT_STANDARD_RGB_24;
break;
case CAIRO_CONTENT_COLOR_ALPHA:
format = XCB_PICT_STANDARD_ARGB_32;
break;
case CAIRO_CONTENT_ALPHA: /* would be XCB_PICT_STANDARD_A_8 */
default:
fprintf (stderr, "Invalid content for XCB test: %d\n", content);
return NULL;
}
render_format = xcb_render_util_find_standard_format (xcb_render_util_query_formats (c), format);
if (render_format->id == 0)
return NULL;
return cairo_xcb_surface_create_with_xrender_format (c, xtc->pixmap, root,
render_format,
width, height);
}
int main(int, char **)
{
int primaryScreen = 0;
xcb_generic_error_t *error = 0;
xcb_connection_t *connection = xcb_connect("", &primaryScreen);
xcb_render_query_pict_formats_cookie_t formatsCookie =
xcb_render_query_pict_formats(connection);
xcb_render_query_pict_formats_reply_t *formatsReply =
xcb_render_query_pict_formats_reply(
connection,
formatsCookie,
&error);
xcb_render_util_find_standard_format(formatsReply,
XCB_PICT_STANDARD_ARGB_32);
return 0;
}
static cairo_surface_t *
_cairo_boilerplate_xcb_create_surface (const char *name,
cairo_content_t content,
double width,
double height,
double max_width,
double max_height,
cairo_boilerplate_mode_t mode,
int id,
void **closure)
{
xcb_screen_t *root;
xcb_target_closure_t *xtc;
xcb_connection_t *c;
xcb_render_pictforminfo_t *render_format;
xcb_pict_standard_t format;
xcb_void_cookie_t cookie;
cairo_surface_t *surface;
cairo_status_t status;
*closure = xtc = xmalloc (sizeof (xcb_target_closure_t));
if (width == 0)
width = 1;
if (height == 0)
height = 1;
xtc->c = c = xcb_connect(NULL,NULL);
if (xcb_connection_has_error(c)) {
fprintf (stderr, "Failed to connect to X server through XCB\n");
return NULL;
}
root = xcb_setup_roots_iterator(xcb_get_setup(c)).data;
xtc->pixmap = xcb_generate_id (c);
switch (content) {
case CAIRO_CONTENT_COLOR:
cookie = xcb_create_pixmap_checked (c, 24,
xtc->pixmap, root->root,
width, height);
format = XCB_PICT_STANDARD_RGB_24;
break;
case CAIRO_CONTENT_COLOR_ALPHA:
cookie = xcb_create_pixmap_checked (c, 32,
xtc->pixmap, root->root,
width, height);
format = XCB_PICT_STANDARD_ARGB_32;
break;
case CAIRO_CONTENT_ALPHA: /* would be XCB_PICT_STANDARD_A_8 */
default:
fprintf (stderr, "Invalid content for XCB test: %d\n", content);
return NULL;
}
/* slow, but sure */
if (xcb_request_check (c, cookie) != NULL) {
xcb_disconnect (c);
free (xtc);
return NULL;
}
render_format = xcb_render_util_find_standard_format (xcb_render_util_query_formats (c), format);
if (render_format->id == 0)
return NULL;
surface = cairo_xcb_surface_create_with_xrender_format (c, xtc->pixmap, root,
render_format,
width, height);
status = cairo_surface_set_user_data (surface, &xcb_closure_key, xtc, NULL);
if (status == CAIRO_STATUS_SUCCESS)
return surface;
cairo_surface_destroy (surface);
surface = cairo_boilerplate_surface_create_in_error (status);
_cairo_boilerplate_xcb_cleanup (xtc);
return surface;
}
